http://www.cidr-report.org/#General_Status +2500 last night. It seems that the origin of this disease is in France. ... quoting myself:

Date: Thu, 10 Nov 2005 16:04:06 +0100 From: Fredy Kuenzler <kuenzler@init7.net> Organization: Init Seven AG - http://www.init7.net/ Subject: Routing Table Jump caused by AS4151

I noticed a jump from some 171k to almost 175k in the last days, and checked CIDR http://www.cidr-report.org/:

...

Top 20 Net Increased Routes per Originating AS

Prefixes Change ASnum AS Description 3263 0->3263 AS4151 USDA-1 - USDA

so I wonder what's wrong with them.